Buggy code:
public class GameModel implements Serializable { private ArrayList < Player > players ; private final int stake = 50 ; private Deck theDeck ; private ArrayList < Boolean > stillInGame ; private int highestBetPlayerId ; private int bigBlind ; private ArrayList < CardValueEnum > handRank ; private ArrayList < Double > roundBet ; private int currentPlayer ; private int lastPlayer ; private GameStatusEnum roundStatus ; private ArrayList < Integer > splitPot ; private ArrayList < ArrayList < Integer > > splitPlayers ; private ArrayList < Boolean > playerAllIn ; public GameModel ( ) { } public void createNewHands ( ) { } public void saveGame ( String filename ) throws IOException { } @ SuppressWarnings ( "unchecked" ) public void loadGame ( String filename ) throws IOException , ClassNotFoundException { } public void setRoundStatus ( GameStatusEnum status ) { } public GameStatusEnum getRoundStatus ( ) { } public boolean getStillInGame ( int playerStillInGame ) { } private void setStillInGame ( int playerStillInGame , boolean value ) { } public int getHandPoints ( int player ) { } public CardValueEnum getHandRank ( int player ) { } private void setHighestBetPlayerId ( int playerId ) { } public Player getPlayer ( int playerId ) { } public ArrayList < Player > getPlayers ( ) { } private int getHighestBetPlayerId ( ) { } public int getPlayersInGame ( ) { } public int winnerByFold ( ) { } public ArrayList < Integer > setWinner ( ) { addTableCardsToPlayers ( ) ; int highestHandPoints = 0 ; ArrayList < Integer > winner = new ArrayList < > ( ) ; for ( int i = 0 ; i < ( players . size ( ) ) ; i ++ ) { if ( ( players . get ( i ) ) instanceof TablePlayer ) { continue ; } if ( ! ( getStillInGame ( i ) ) ) { continue ; } setHandPoints ( i ) ; if ( ( getHandPoints ( i ) ) > highestHandPoints ) { highestHandPoints = getHandPoints ( i ) ; } } for ( int i = 0 ; i < ( players . size ( ) ) ; i ++ ) { if ( ( players . get ( i ) ) instanceof TablePlayer ) { continue ; } if ( ! ( getStillInGame ( i ) ) ) { continue ; } if ( ( getHandPoints ( i ) ) == highestHandPoints ) { winner . add ( i ) ; } } for ( int i = 0 ; i < ( winner . size ( ) ) ; i ++ ) { <START_BUG> if ( ( players . get ( i ) ) instanceof TablePlayer ) { <END_BUG> continue ; } players . get ( winner . get ( i ) ) . addMoney ( players . get ( findTable ( ) ) . withdrawMoney ( ( ( players . get ( findTable ( ) ) . getMoney ( ) ) // ( winner . size ( ) ) ) ) ) ; System . out . println ( ( ( ( ( ( "player:<seq2seq4repair_space>" + ( players . get ( winner . get ( i ) ) . getName ( ) ) ) + ",<seq2seq4repair_space>handPoints:<seq2seq4repair_space>" ) + ( getHandPoints ( winner . get ( i ) ) ) ) + "<seq2seq4repair_space>CardValue:<seq2seq4repair_space>" ) + ( getHandRank ( winner . get ( i ) ) ) ) ) ; } return winner ; } public void getHandPoints ( int playerId , CardValueEnum cardValue ) { } public void addTableCardsToPlayers ( ) { } private Hand setHandPoints ( int playerId ) { } public void smallAndBigBlind ( ) { } public boolean roundComplete ( ) { } private void setBigBlind ( int playerId ) { } private int getBigBlind ( ) { } public int getPlayablePlayers ( ) { } public int getStake ( ) { } private void setPlayerAllIn ( int playerId , boolean value ) { } private boolean getPlayerAllIn ( int playerId ) { } public Player getCurrentPlayer ( ) { } public int getCurrentPlayerId ( ) { } private void setNextHighestBetPlayer ( ) { } public double getMissingBetAmount ( int playerId ) { } public void setNextPlayer ( ) { } private void setNextPlayer ( int nextPlayer ) { } public void bet ( double betAmount ) { } public void check ( ) { } public void call ( ) { } public void fold ( ) { } public void dealCards ( int numberOfCards ) { } public void dealTable ( int numberOfCards ) { } public double getRoundBet ( int playerId ) { } private void setRoundBet ( int playerId , double amount ) { } public int findTable ( ) { } private void rotatePlayers ( ) { } public void initGame ( ) { } private Suit_ checkFlush ( Hand oneHand ) { } private CardValueEnum setHandValue ( Hand oneHand ) { } private Rank_ getLowestCardInStraight ( Hand oneHand ) { } private CardValueEnum checkRankAndSuitValue ( Hand oneHand ) { } private ArrayList < Rank_ > getMatchingCards ( Hand oneHand , int numberOfMCards , int occurrences ) { } private int getHandPoints ( Hand oneHand ) { } private ArrayList < Hand > getAllHands ( Hand playerHand ) { } }

Fix:
if ( ( players . get ( winner . get ( i ) ) ) instanceof TablePlayer ) {